An iron needle slowly placed on the surface of water floats because

Small liquid drops assume a spherical shape because

Small droplets of a liquid are usually more spherical in shape than larger drops of the same liquid because

$A$ spherical body of density $\rho$ is floating half immersed in a liquid of density $d$. If $\sigma$ is the surface tension of the liquid,then the diameter of the body is

On what does the value of surface tension depend? Explain.

Water is filled up to a height $h$ in a beaker of radius $R$ as shown in the figure. The density of water is $\rho$,the surface tension of water is $T$ and the atmospheric pressure is $P_0$. Consider a vertical section $ABCD$ of the water column through a diameter of the beaker. The force on water on one side of this section by water on the other side of this section has magnitude